{"identifier":"CVE-2026-99220","cve":{"id":"CVE-2026-99220","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nasymmetric_keys: reject trust keys without IDs\n\nThe PKCS#8 parser deliberately leaves the asym_key_ids payload slot\nempty. key_or_keyring_common() unconditionally dereferences that slot\nwhen a PKCS#8 key is supplied to a key_or_keyring restriction. Both the\nplain and :chain forms reach this branch, allowing an unprivileged caller\nto trigger a NULL pointer dereference through KEYCTL_RESTRICT_KEYRING\nfollowed by add_key().\n\n Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000\n KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\n RIP: 0010:key_or_keyring_common (crypto/asymmetric_keys/restrict.c:205 crypto/asymmetric_keys/restrict.c:279)\n Call Trace:\n  <TASK>\n  __key_create_or_update (security/keys/key.c:884)\n  key_create_or_update (security/keys/key.c:1021)\n  __do_sys_add_key (security/keys/keyctl.c:134)\n  do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83)\n  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)\n  </TASK>\n Kernel panic - not syncing: Fatal exception\n\nReject an asymmetric restriction key without key IDs. A PKCS#8 private\nkey cannot identify the signer of a candidate certificate and is not a\nvalid trust anchor.","published":"2026-11-02T16:17:46.113000+00:00","modified":"2026-11-02T16:17:46.113000+00:00","status":"Received","score":null,"severity":"UNSCORED","vector":"","cvss_version":"","affected":[],"weaknesses":[],"references":[{"url":"https://git.kernel.org/stable/c/1aa0c7aa4c2554a5b6d74ae1924508ca4718234b","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/2a40bdd4409567de4c2a141ac66439dc238af752","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/33a078f04e264eb71aa9f209cb334e4010123818","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/57e54b6939c6539d90a81c7e57531901d5991651","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/7f0728ba89624e25df2bb80ff59bbfb545060935","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/889a2293a95f6c2880bf73b67f9b0af23251a128","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"kev":null,"kev_checked":true,"metrics":{},"configurations":[],"source":"nvd","retrieved_at":"2026-11-02T19:29:43.673348+00:00","exploited":false,"kev_stale":false,"products":[],"priority":{"label":"Assess exposure and vendor guidance","reasons":["No higher-priority signal is available in the current stored evidence.","Fresh EPSS data is unavailable; missing values are not zero."]},"epss":null,"version_assessment":null},"news":[],"campaigns":[],"domains":[{"domain":"git.kernel.org","source_url":"https://git.kernel.org/stable/c/1aa0c7aa4c2554a5b6d74ae1924508ca4718234b","investigate_url":"https://investigate.aeglixmind.com/#git.kernel.org"}],"arsenal_url":"https://arsenal.aeglixmind.com/?cve=CVE-2026-99220","catalog_url":"https://cves.aeglixmind.com/cve/CVE-2026-99220","research_url":"https://investigate.aeglixmind.com/research/cve/CVE-2026-99220","coverage":{"news_candidates_checked":0,"campaign_candidates_checked":0,"bounded":false,"notice":"Exact CVE mentions in stored public excerpts and reviewed campaign content only. A mention is not proof of exploitation, attribution or tool suitability. Missing matches do not establish absence."}}